package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @auther zzyy
 * @create 2020-02-20 11:11
 */
@Service
public class PaymentService
{
    /**
     * 正常访问，肯定OK
     * @param id
     * @return
     */
    public String paymentInfo_OK(Integer id)
    {
        return "线程池:  "+Thread.currentThread().getName()+"  paymentInfo_OK,id:  "+id+"\t"+"O(∩_∩)O哈哈~";
    }
    //延迟三秒钟
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOut_Hander")
    public String paymentInfo_TimeOut(Integer id) {
        try {
            TimeUnit.MILLISECONDS.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池:  "+Thread.currentThread().getName()+" id:  "+id+"\t"+"延迟了------O(∩_∩)O哈哈~";
    }

    public String paymentInfo_TimeOut_Hander(Integer id) {
        return "线程池:  "+Thread.currentThread().getName()+" id:  "+id+"\t"+"服务降级了---请稍后再试！";
    }
//===================服务熔断
@HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
        @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),// 是否开启断路器
        @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),// 请求次数
        @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"), // 时间窗口期
        @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),// 失败率达到多少后跳闸
})
public String paymentCircuitBreaker(@PathVariable("id") Integer id)
{
    if(id < 0)
    {
        throw new RuntimeException("******id 不能负数");
    }
    String serialNumber = IdUtil.simpleUUID();

    return Thread.currentThread().getName()+"\t"+"调用成功，流水号: " + serialNumber;
}
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id)
    {
        return "id 不能负数，请稍后再试，/(ㄒoㄒ)/~~   id: " +id;
    }
}
